Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Meteorite composition"'
Autor:
Elin M. Morton, Harvey Pickard, Frank Wombacher, Yihang Huang, Emeliana Palk, Rayssa Martins, Sven Kuthning, Maria Schönbächler, Mark Rehkämper
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 53 (2024)
The origin of volatile depletion in the solar system remains a topic of intense debate. To further inform our understanding of the mechanisms involved, this study characterized the mass-dependent Zn, Cd, and Te isotope compositions and concentrations
Externí odkaz:
https://doaj.org/article/c82f371846164455bc62a65a0b9817fd
Autor:
Leos Pohl, Daniel T. Britt
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 11, p 252 (2024)
Some groups of carbonaceous chondrites are dominated by phyllosilicates, specifically the serpentine group, which are characterized as alternating layers of silicates, metal cations, and hydroxyl (OH). Both antigorite, an Mg-rich member, and cronsted
Externí odkaz:
https://doaj.org/article/198ccfc372ab4952abdfa1e23f2e25cb
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 34 (2024)
An enhancement in the activity of the early young Sun resulting in a high charged particle flux has been invoked to explain excesses in spallation-induced nuclides in primitive planetary materials. Astronomical observations of energetic outbursts of
Externí odkaz:
https://doaj.org/article/cb40789446d04ad8bce536fbfd5bfbcb
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 7, p 160 (2024)
In this study, a comprehensive model of the meteoric organic cycle on Mars for the current geological period is developed, which characterizes the ablation of exogenous organic matter in the upper atmosphere, the accretion of intact carbon at the sur
Externí odkaz:
https://doaj.org/article/3da73650639349f299749de9aff3bcc9
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 10 (2024)
Calcium, aluminum-rich inclusions (CAIs) are the oldest solids dated that formed in the solar system. Most CAIs in unmetamorphosed chondritic meteorites (chondrites; petrologic type ≤3.0) have uniform solar-like ^16 O-rich compositions (Δ ^17 O
Externí odkaz:
https://doaj.org/article/7ce2e62cc97a43e79cf73c5b514833d5
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 2, p 53 (2024)
Primitive meteorite groups such as the Vigarano, Mighei, and Karoonda carbonaceous chondrites have enigmatic patterns of elemental abundances, with moderately volatile elements—those that transition from vapor to condensate between ∼400 and ∼90
Externí odkaz:
https://doaj.org/article/4f743c7fc634448f97132dfe4c02dd92
Autor:
Martin Bizzarro, Martin Schiller, Tetsuya Yokoyama, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon-Gak Choi, Nicolas Dauphas, Andrew M. Davis, Tommaso Di Rocco, Wataru Fujiya, Ryota Fukai, Ikshu Gautam, Makiko K. Haba, Yuki Hibiya, Hiroshi Hidaka, Hisashi Homma, Peter Hoppe, Gary R. Huss, Kiyohiro Ichida, Tsuyoshi Iizuka, Trevor R. Ireland, Akira Ishikawa, Shoichi Itoh, Noriyuki Kawasaki, Noriko T. Kita, Kouki Kitajima, Thorsten Kleine, Shintaro Komatani, Alexander N. Krot, Ming-Chang Liu, Yuki Masuda, Mayu Morita, Fréderic Moynier, Kazuko Motomura, Izumi Nakai, Kazuhide Nagashima, David Nesvorný, Ann Nguyen, Larry Nittler, Morihiko Onose, Andreas Pack, Changkun Park, Laurette Piani, Liping Qin, Sara S. Russell, Naoya Sakamoto, Maria Schönbächler, Lauren Tafla, Haolan Tang, Kentaro Terada, Yasuko Terada, Tomohiro Usui, Sohei Wada, Meenakshi Wadhwa, Richard J. Walker, Katsuyuki Yamashita, Qing-Zhu Yin, Shigekazu Yoneda, Edward D. Young, Hiroharu Yui, Ai-Cheng Zhang, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Ryuji Okazaki, Kanako Sakamoto, Hikaru Yabuta, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tatsuaki Okada, Toru Yada, Kasumi Yogata, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Sei-ichiro Watanabe, Makoto Yoshikawa, Shogo Tachibana, Hisayoshi Yurimoto
Publikováno v:
The Astrophysical Journal Letters, Vol 958, Iss 2, p L25 (2023)
The nucleosynthetic isotope composition of planetary materials provides a record of the heterogeneous distribution of stardust within the early solar system. In 2020 December, the Japan Aerospace Exploration Agency Hayabusa2 spacecraft returned to Ea
Externí odkaz:
https://doaj.org/article/54d24c5baaac4f4990a9d2861c903077
Publikováno v:
The Astrophysical Journal Letters, Vol 954, Iss 1, p L27 (2023)
The recent advent of nontraditional isotopic systems has revealed that meteorites display a fundamental isotopic dichotomy between noncarbonaceous (NC) and carbonaceous (C) groups, which represent material from the inner and outer solar system, respe
Externí odkaz:
https://doaj.org/article/e28033706b4b4912bfc326d13c26d34e
Autor:
Maggie A. Thompson, Myriam Telus, Graham Harper Edwards, Laura Schaefer, Jasmeet Dhaliwal, Brian Dreyer, Jonathan J. Fortney, Kyle Kim
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 10, p 185 (2023)
Outgassing is a central process during the formation and evolution of terrestrial planets and their atmospheres both within and beyond the solar system. Although terrestrial planets’ early atmospheres likely form via outgassing during
Externí odkaz:
https://doaj.org/article/7ca83ea049ac4ccbaed7bcc36870c7e4
Autor:
Klaus Paschek, Dmitry A. Semenov, Ben K. D. Pearce, Kevin Lange, Thomas K. Henning, Ralph E. Pudritz
Publikováno v:
The Astrophysical Journal, Vol 942, Iss 1, p 50 (2023)
Prebiotic molecules, fundamental building blocks for the origin of life, have been found in carbonaceous chondrites. The exogenous delivery of these organic molecules onto the Hadean Earth could have sparked the polymerization of the first RNA molecu
Externí odkaz:
https://doaj.org/article/6af031156ad24f3abddc5c944b995419